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Cet album photos contient les sous-albums suivants :
The heating plant of Oulu district mental hospital 1937 (JOKAKAL3B-3707).tif - FinnaUploadBot
New heating equipment in demonstration 1950 (JOKAMT2MTK51-2).tif - FinnaUploadBot
The heating plant of Oulu district mental hospital 1937 (JOKAKAL3B-3678).tif - FinnaUploadBot
The heating plant of Oulu district mental hospital 1937 (JOKAKAL3B-3691).tif - FinnaUploadBot
The heating plant of Oulu district mental hospital 1937 (JOKAKAL3B-3692).tif - FinnaUploadBot
The heating plant of Oulu district mental hospital 1937 (JOKAKAL3B-3689).tif - FinnaUploadBot
The heating plant of Oulu district mental hospital 1937 (JOKAKAL3B-3690).tif - FinnaUploadBot
Wood chips for heating 1950 (JOKAMT2Kon19-2).tif - FinnaUploadBot
The heating plant of Oulu district mental hospital 1937 (JOKAKAL3B-3708).tif - FinnaUploadBot
New heating equipment in demonstration 1950 (JOKAMT2MTK51-1).tif - FinnaUploadBot
Central heating (JOKAMT2Kon19-1).tif - FinnaUploadBot
Wood chips as source of energy (JOKAMT2Kon19-3).tif - FinnaUploadBot